* {
    padding: 0;
    margin: 0;
    /* list-style: none; */
}

.tab {
    position: absolute;
    margin: 100px auto;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 496px;
    height: 380px;
    overflow: hidden;
    float: left;
}

.tab_list {
    width: 100%;
    height: 35px;
    overflow: visible;
    position: relative;
}

.tab .tab_title {
    width: 596px;
    height: 35px;
    left: 0;
}

.tab_title {
    position: absolute;
    height: 35px;
    left: 128px;
    box-sizing: border-box;
    border-bottom: 1px #e0e2e2 solid;
}

.tab .tab_title>li {
    font-size: 18px;
    line-height: 24px;
    margin-right: 74px;
}

.tab_title>li.selected,
.tab_title>li:hover {
    font-weight: 700;
    color: #1da6ba;
}

.tab_title>li {
    list-style: none;
    position: relative;
    cursor: pointer;
    float: left;
    width: auto;
    min-width: 40px;
    height: 37px;
    overflow: visible;
    color: #676767;
    letter-spacing: 1px;
    text-align: center;
}

.tab_title>li:after {
    content: '\0020';
    position: absolute;
    background-image: url(../images/tab-bottom.png);
    background-position: center center;
    box-sizing: border-box;
    display: none;
    width: 100%;
    height: 7px;
    left: 0;
    bottom: 0;
    transition: width .2s, left .2s, margin-left .2s;
    background-size: auto auto;
    margin-left: 0;
}

.tab_title>li.selected:after,
.tab_title>li:hover:after {
    display: block;
    animation: scalein-2 .2s;
    -webkit-animation: scalein-2 .2s;
}

.item {
    display: none;
}